10-02-05

Doc Zone Episode on Hyper Parents & Coddled Kids
http://www.cbc.ca/video/#/Shows/Doc_Zone/ID=1404802913

Elevator Lab Data (Homework assignment) - measurements in lbs.:

	Mass Reading "up" (start of journey)	Mass Reading "down" (start of journey)	Mass Reading "stationary"
A	140	110	120
B	145	105	125
C	219	165	194
D	203	155	172
E	140	110	128
E	142	108	128
F	220	160	180
G	242	192	215
H	160	118	135
I	200	155	175

Note: use 9.8 m/s2 for g

F(spring) - F(gravity) = F(net)
m(up) x g - m(stationary) x g =m(stationary) x g = m(stationary) x acceleration

m(up) x g - m(stationary) x g = F(net)
= m(stationary) x a
the trick is to get the signs correct.